I've become a Sun Rim lover over the last year or so. They build up easy and IME stay true even if you beat on em.

My most recent wheel builds have been with Sun CR-18, Sun Rhyno Lite, Mavic Open 4 CD, and Vintage Weinmann Rims. I dunno if it was me or the Rims but it seemed like The Sun rims were easier to keep Vertically true while building, and the Weinmann Rims were just hell to work with...like trying to tension a noodle.

I really like the look of the Sun M13II, but 13mm inside rim width doesn't let you safely run anything more than like a 28mm tire.